title: Supermolecular structure of cellulose/amylose blends prepared from aqueous NaOH solutions and effects of amylose on structural formation of cellulose from its solution.
abstract: We previously proposed a mechanism for the structural formation of cellulose from its solution using a molecular dynamics (MD) simulation and suggested that the initial structure from its solution plays a critical role in determining its final structure. Structural changes in the van der Waals-associated cellulose molecular sheet as the initial structure were examined by MD simulation; the molecular sheet was found to be disordered due to maltohexaoses as an amylose model in terms of the hydrogen bonding system of cellulose. The structure and properties of cellulose/amylose blends prepared from an aqueous NaOH solution were examined experimentally by wide-angle X-ray diffraction and dynamic viscoelasticity measurements. The crystallinity of cellulose in the cellulose/amylose blend films was lower than that of cellulose film. The diffraction peaks of the cellulose/amylose blends were slightly shifted; specifically, (1 1 0) was shifted to a higher angle, and (1 1 0) and (0 2 0) were shifted to lower angles. These experimental results probably resulted from the disordered molecular sheet, as revealed by MD simulations.
authors.affiliation: Faculty of Home Economics, Kobe Women's University, 2-1 Aoyama, Higashisuma Suma-ku, Kobe 654-8585, Japan.
authors.forename: Hitomi
authors.initials: H
authors.lastname: Miyamoto
authors.forename: Mariko
authors.initials: M
authors.lastname: Ago
authors.forename: Chihiro
authors.initials: C
authors.lastname: Yamane
authors.forename: Masaharu
authors.initials: M
authors.lastname: Seguchi
authors.forename: Kazuyoshi
authors.initials: K
authors.lastname: Ueda
authors.forename: Kunihiko
authors.initials: K
authors.lastname: Okajima
mesh_terms: D000688:Amylose / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry*; D006860:Hydrogen Bonding; D009682:Magnetic Resonance Spectroscopy; D008855:Microscopy, Electron, Scanning; D056004:Molecular Dynamics Simulation; D012972:Sodium Hydroxide / Q000737:chemistry*; D012996:Solutions / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D012996:Solutions; D012972:Sodium Hydroxide; D002482:Cellulose; D000688:Amylose